0 packages upgraded, 5 newly installed, 0 to remove and 7 not upgraded.
Need to get 33.5MB of archives. After unpacking 96.2MB will be used.
Do you want to continue? [Y/n/?]
WARNING: untrusted versions of the following packages will be installed!
Untrusted packages could compromise your system's security.
You should only proceed with the installation if you are certain that
this is what you want to do.
odbcinst1debian1 sun-java6-bin unixodbc sun-java6-jre sun-java6-plugin
Do you want to ignore this warning and proceed anyway?
To continue, enter "Yes"; to abort, enter "No": n
Unrecognized input. Enter either "Yes" or "No".
Do you want to ignore this warning and proceed anyway?
To continue, enter "Yes"; to abort, enter "No": no
Abort.

A search of the archives recommends that I have the
debian-archive-keyring installed. Which I do have installed: